Doctrine + SQLite + UUID = ?

Account.php

<?php
declare(strict_types=1);
namespace Thunder\Entity;

/* final */ class Account
{
    /** @var resource */
    private $id;

    public function __construct(AccountId $id)
    {
        $this->id = (string) $id; // === Uuid::getBytes()
    }

    public function getId(): AccountId 
    { 
        return AccountId::fromBytes($this->id); 
    }
}

mapping.xml

    <entity name="Thunder\Entity\Account" table="account">
        <id name="id" type="binary" length="16" column="id" />
    </entity>